Electrical discharge mb-code 1618899 'The addressers'

'The addressers'

These apply to both the front and back

(and) an exact figure

green and indigo (inner) with a central spot

Saint Erkenwald was Bishop of London from 675 until his death in 693

Electrical discharge mb-code 1618899 'The addressers'Patterns produced by electrical discharges on surfaces revealed by dusting with powdered red lead and sulphur. Sometimes termed 'Lichtenberg figures'. These experiments were conducted at Cragside in Northumberland, England, using a Wimshurst machine (electrostatic generator) and two 10 gallon Leiden jars. Current was conveyed to two rod conductors with a spark gap at which coated wires discs or plates were positioned. Lord Armstrong exhibited figures